风积沙混凝土收缩变形的试验研究  

Experimental Study on Shrinkage Deformation of Aeolian Sand Concrete

作　　者：李根峰[1] 申向东[1] 吴俊臣[1] 董伟[1] 薛慧君[1] 刘昱[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018

出　　处：《硅酸盐通报》2016年第4期1213-1218,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金资助项目(51569021);高等学校博士学科点专项科研基金(20121515110002);内蒙古自治区应用与研究开发科技计划项目(20130425)

摘　　要：本文选取内蒙古库布齐沙漠的风积沙进行风积沙混凝土的收缩变形试验研究。为了探讨风积沙掺量对混凝土收缩变形的影响,按照实验室配合比,将搅拌好的混凝土制成100 mm×100 mm×515 mm的棱柱体试件。在自然养护条件下,采用非接触式混凝土收缩变形测定方法试验不同风积沙掺量下3 d内的收缩变形,同时进行无侧限抗压强度与劈裂强度试验,得到表征风积沙混凝土收缩变形规律的收缩率曲线。结果表明,随着风积沙掺量的增加,风积沙混凝土的收缩变形逐渐增大。This paper selects aeolian sand from the Ku Bu Qi desert of Inner Mongolia to conduct the research about the shrinkage deformation of aeolian sand concrete. To investigate the influence of different aeolian sand proportion on shrinkage deformation,according to labortary mixing proportion,with the test specimen in 100 mm × 100 mm × 515 mm,researchers are adopting the method of contact-less concrete shrinkage deformation to test shrinkage deformation of different aeolian sand proportion within three days with the natural curing. Meanwhile,with the test of unconfined compressive strength and splitting strength,researchers conclude a shrinkage curve about the law of aeolian sand concrete shrinkage deformation. As a result,with the increase of proportion of aeolian sand,shrinkage deformation of aeolian sand concrete is increasing.

关 键 词：风积沙混凝土 自然养护 非接触式 收缩变形 

分 类 号：TQ175[化学工程—硅酸盐工业]